Glencoe Math: Course 3, Volume 2
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Glencoe Math: Course 3, Volume 2 View details
4. Polygons and Angles
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Exercise 31 Page 404

Two angles are complementary if the sum of their measures is Two angles are supplementary if the sum of their measures is

Complementary

Practice makes perfect

Let's start by recalling the definitions of complementary and supplementary angles.

Complementary Angles Supplementary Angles
Two angles are complementary if the sum of their measures is Two angles are supplementary if the sum of their measures is
We are told that the measures of two angles are and To determine whether they are complementary, supplementary, or neither, we will calculate the sum of their measures.
Since the sum is the angles are complementary.